With summer in full swing, it's time to talk about the celebrity couples who are sizzling up the season! From red carpet appearances to steamy vacation snaps, these pairs are serving some serious heat. But who takes the crown for the hottest duo?

Some contenders:

• Emily Ratajkowski and her new mystery man
• Kim Kardashian and Pete Davidson (are they still on?)
• Megan Fox and Machine Gun Kelly (always a wild card)
• Rihanna and A$AP Rocky (baby bliss or what?)

What do you think? Are there any other couples that deserve a spot on this list? Share your picks and let's debate who's the hottest of them all!