I think it all depends on how important sex is to you in your relationship.

My Wife and I didn’t have sex until after we were married because of some personal problems in her past and I married her not knowing if we would ever have it at all and even though we have sex now and have a two year old and another baby on the way I would have stayed with her even if we never had sex because l love her and I could live without sex. In your case, I think you should break up with your boyfriend now because if you care about him it is better that you break up with him than cheat on him with another man or woman and having him find out later.