Why do we do what we do?

Ok todays blog not so interesting... but I found myself asking why do we do what we do?...As you may all know I am boy crazy..there has not been one day I don't think about boys, dates, making out, I am worse than a 15 yr old girl. Anyways.. I have been seeing on and off a guy named Tom aka fish boy for those of you who know the nicknames..since I have so many boys they need nicknames to differentiate between each other. As those of you may also know tom..not the nicest guy in the world..he has that European arrogance to him..you know the one where he thinks he is better than anyone..I know I know you ask what the hell are you doing with him...I dont know..its not like I see myself long term with this guy, nor do I see myself marrying him, the relationship isnt about sex (we haven't had any), we just go out and make out and sleep in bed together..I think its just the comfort level of having someone lay next to you and hold you tight and hes very affectionate...and when I hang out with him I feel safe and wanted..hmm I don't know this is so confusing..damn boys...ok that is all had to get it off my chest..please comment with suggestions