Most Helpful Guy
Well, since you have obviously stood your ground and know that to you, having a boyfriend that is younger than you is disgusting, then you should confront him. Ask him why he lied to you and see if you can make up. You decide what to do next, but I hope this helped. Feel better!
Most Helpful Girl
You need to sit down & talk with him about this. Lying isn't cool, no matter what it is. The first time, maybe. But he kept it up, & YOU had to find out for yourself. There are sometimes liars, & there are pathological liars. Find out why he did it before you find out more possible lies & string yourself along. If he gives a "reasonable" reason to lying, I would take some space, so you can breath, & if you truly love this guy, start over with him. Love shouldn't come with a silly age limit. I was in your shoes once, & I finally dated a friend who was/is a little younger than me. It wasn't all that bad, & we weren't even in love (well, I certainly wasn't lol), but you ARE- or at least say you are. Don't ruin something that important.