There are three types of men. Guys you don't want to be with, guys you want to have lots of sex with and possibly get pregnant, and those who would make great fathers but you don't want anything physical with them. Sure there are more possibilities but I have simplified it for this instance.
There isn't enough sexual chemistry between the two of you. Yeah, he may look cute/good, but he's not the type of guy that turns you on. You can't create chemistry that isn't there naturally, so there's really nothing you can do.
+1
you just shouldn't to it until you feel its right with him...
maybe you're comparing him to your ex, and if there is no sexual desire, then there should just be no sex.
Scroll Down to Read Other Opinions
What's Your Opinion? Sign Up Now!So what is your question?
Well, how soon after your ex did you get with this guy? That might play a reason into this. It could be that you are not really over your ex or something.
the relationship ended in august 2009 but we made out sometimes until one month before my new relationship started...
That could be a cause of it then, but not entirely sure hmm... anything else about you two you wanna share? Common interests? How you met? Why you went out with him?
hmm it`s a weird story... my ex, my boyfriend and I go to the same school and my ex and my boyfriend were/are really good friends... I was kind of jealous when I was with my ex because they spent a lot of time together my ex changed his mind a lot of times and whenever I thought I was over him he came and said he wants to be with me again...(this was several times the case), somehow my boyfriend began to text message with me and I didn`t have contact with my ex during summer vacation and we became a couple
Sexual Relationships 
Sexual Health 
Most Helpful Guys