this is something i have struggled with too. I haven't had the nicest friends or significant others so when someone shows me any kindness that's what i think it means too. And then a lot of times I find myself infatuated with them because someone is being nice to me.
really all you can do is remember that basically if a guy is actually into you, he's going to tell you. no need to assume.
Ted, how do I explain this to you. Last night, I ate the best cake of my life. Do you think I'm gonna let that cake out of my life? Hell no. I'm gonna find out what bakery made that cake and I'm gonna get some more cake.