I've liked him for so long?

At the moment i'm in a relationship with "guy1" and everything is going smoothly, although we've only been together a week and four days i really like him, the only problem is i've known this guy called "guy2" for a very long time, i'd say about 7/8years and i have ALWAYS liked him and just recently i've been seeing him around and i just smile at him and then yesterday he texted me saying "guess who i just seen;) xx" and i put "me by any chance?;)x" and he put "Offt yh couldn't keep my eyes off you;)" and i said i look like a tramp haha and he said "Nah you don't you look like you actually are a model;)" which made me smile and i saw him today and stood and spoke to him while waiting for my little cousin and it was just small talk but i felt so connected to him and i don't get that same feeling with "guy1" argh i'm confused HELP