I need help, relationships?

Ok, so this one man lets name him, Mike for now, is my next door neighbor and my very best man friend. Hes almost 13 and I just turned 14. I’ve loved him for awhile and when we were young (like 5) we “dated” but I’m sure it was just goofy, obviously nothing serious! And then I guess we broke up, but I have no recollection of that. But he was my first kiss and everything… He has a gf now, same name as me, coincidence! And they barely hang out, only in college so all summer they’ve never seen each other because her father is strict. He gives me hugs like all the time, but I don’t think its much of a deal because I think I know why he’s doing it. Well, his cousin, lets call him Eric, loves me. A lot. For like four years straight. And I think Mike just loves to tick him off by hugging me. We were playing truth or dare one time and they dared me to kiss Eric, I did, I don’t back down from dares. I kissed mostly everyone, except Mike (I was the only girl, as usual). By the end of the night Mike was saying how he was the only one who didn’t get kissed by me, so I said “don’t worry!” and kissed him goodnight on the cheek, he smiled but after that it was weird. He does have a girlfriend. So then I felt like a slut! I don’t think he loves me, but I’m not sure. Any advice, should I make a move, tell him how I feel, or wait til him and Amanda break up? And do you think it will break Eric’s heart?? All advice welcome Thanks.