The Big Bang Theory are two of the most popular sitcoms out there, even though both of them have come to end. Fans are still binging and re-watching these hilarious shows, and keep falling in love with each and everyone of the dynamic and unique characters.

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Everyone knows Nick and Jess or Leonard and Penny, but what would happened if all these characters found themselves in the same fictional universe? It's time to see who might link up in a crossover series, and which characters would definitely crash and burn as a couple.

Would Work: Coach & Penny

Coach and Penny

These two might not bring out the best in each other, but they'd definitely be able to get along and have a fun and spontaneous relationship. They're both similar in their outgoing and vibrant personalities.

If the relationship didn't work out, they'd probably be the best of friends - always willing to each other and have a fun time doing new things. Their similarities might actually work out in their favor.

Wouldn't Work: Cece & Howard

Cece and Howard

There's only one girl that might be able to handle Howard, and it's definitely Bernadette. Unfortunately for him, Cece probably wouldn't give him the time of day. In a weird way, they could probably be friends - like Penny and Howard.

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However, Cece just wouldn't be able to handle Howard's forwardness and weirdness, and frankly, Cece would probably get pretty bored dating an engineer. They just aren't complimentary to each other.

Would Work: Winston & Amy

Winston and Amy

It's possible that these sweet, adorable, and funny characters would actually make one perfect couple. They would always be laughing at each other's jokes - that no one else found funny - and they'd do the nicest things for each other.

They're both lowkey and down-to-earth people, and they'd both each other's careers. Amy might even let Winston have a cat! These two would be that couple that everyone thinks is gross - because they're actually way too cute.

Wouldn't Work: Coach & Bernadette

Coach and Bernadette

There's not that many people out there that can mesh well with Bernadette's fire, and it's likely because there's a lot of characters that are also pretty fiery themselves, and it would just create a huge, hot mess.

Coach and Bernadette might be the most competitive characters from their respective groups, and that probably means they wouldn't work out. If they made it work, it would be a LOT for everyone else to handle.

Would Work: Cece & Penny

Cece and Penny

These two ladies would probably hype each other up until they both felt so incredibly pumped and happy. They both love fashion and fun, but they're also both outgoing and totally hilarious.

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They'd have a fun time together, but they'd also be super caring and ive of one another. These two gals would likely make a totally unstoppable pair.

Wouldn't Work: Jess & Leonard

Jess and Leonard

These two would likely get along as friends, but everyone can probably see that Jess would break up with Leonard because they were missing that spark. She's tried to get romantic with people more similar to her (like Robby or Paul), but it just doesn't work out.

These two wouldn't bring out the spontaneity hiding within each of them, but they'd have a pretty straight and narrow relationship that they'd both definitely end up unhappy in.

Would Work: Schmidt & Emily

Schmidt and Emily

There's no one better for Schmidt than Cece, but there's something about Emily and Schmidt's weird and unique personalities that might actually make for one real and ionate relationship.

They would certainly weird other people out, but they might be able to make it last with their spontaneity and willingness to try new things. They're both stubborn and wild, and it might just actually work out.

Wouldn't Work: Nick & Bernadette

Nick and Bernadette

Nick would probably lose his mind if Bernadette tried to tell him what to do. All fans know it works on Howard, but it certainly wouldn't fly with the stubborn and egotistical Nick Miller.

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They'd be hilarious to watch argue, but it's safe to say these two would never strike up a romance. If they did, it would be over before either of them could even start screaming at the other. These two are way too fiery.

Would Work: Jess & Raj

Jess and Raj

While Leonard and Jess might fizzle out, there might be hope for Raj and Jess. They're both totally selfless and caring, but they also do like to have fun and quite literally dance like no one's watching.

Jess could give Raj confidence while Raj s Jess through thick and thin. They'd definitely sing songs around the campfire together, and their love would be something adorable.

Wouldn't Work: Aly & Sheldon

Aly and Sheldon

If there's someone that seriously wouldn't handle a second of Sheldon, it's probably Aly. She's hilarious, kind, and fun, but she also is super stubborn and super impatient. She wouldn't tolerate any of Sheldon's mannerisms or behavior.

Sheldon deserves someone who loves him just for himself, and Aly needs someone that will bring out her softer side. Neither of these things can be true in the slightest if these two were together.

NEXT: The Big Bang Theory Meets Friends: 5 Couples That Would Work (& 5 That Wouldn't)