Sex, Condoms, BC.

So, I've been seeing this guy for awhile and finally had the talk. He knows that I'm a virgin, I know that he isn't but, today while talking about me wanting to get on BC before we do anything- I brought it up. He mentioned that Condoms cause him to lose his erections. From what I've felt (through clothing) it's quite large. We're both consenting 21 year olds, so I was wondering should I go on BC? I don't like pills but I've seen some IUD horror stories and don't know if I could take a pill at the same time every day. Please help.