Really Need Any Advice!! please

Okay so I just got out of a 10 month relationship with my first love 3 months ago. Well, I was really upset one night because my mother passed away (after we had broken up) & well this guy (let's call him J) messaged me asking if I was okay. Before that J had commented on my photos telling me to text him, but I never did. And his friend Ryan texted me and told me that J liked me & I should talk to him. I ignored it again because I didn't know anything about J. Well when I was upset he made me feel better. It was so nice having someone to be there for me. We started talking more & now we've hung out for the past month & a half and became best friends. He is the most sweetest, respectful, funniest guy I've ever known. Last night he finally told me that he liked me.. I like him but there's one problem. J is kinda on the big side., I'm not the kind of person to ever judge someone because of their weight but I take relationships serious & I feel like his weight would change things. How could we cuddle? go to the beach? idrk. I need to know what to do. Please don't think I'm a bad person, I just need advice. Is it hard dating a bigger man?