Men just like a more natural look, even when a girl is wearing makeup men may not even notice, you'd really have to wear allot for a guy to think its too much. They can't tell what is what most the time normally, like if that girl is wearing blush or if she has nude lipstick on, or mascara. I think its just too much of everything they don't like.
I'm the same way as your boyfriend, except I have a clearer reason as to why. My reason is that I don't like how it covers up a woman's natural beauty. I love my girlfriend even more when she doesn't have any makeup on. the makeup is almost like a mask, covering who you really are, and showing that you would rather cover your small imperfections, than show them, and embrace them. when I look at a woman with allot of makeup on I think of how she could look under the makeup, and much more attractive she is without it. Maybe your boyfriend just doesn't like the look, maybe he just wants to see your natural beauty. I'm sure you can ask him the question, and maybe give him a few reasons as to why, he may agree with some of them!
Most guys don't mind eye makeup...there will be some that do and there will be some that don't mind heavy eye makeup...but check out this link..these are good looking females and, while the first three are wearing a lot of eyes, most of us could probably live with that and especially the last three...but ALL of them have on a lot of face/cheek makeup and I HATE that...while the very last one is just about enough to make me hurl...gag..retch.../:/:/:
If it works for you and you're comfortable with yourself while wearing it, do it.
I think some girls look really hot with makeup applied in just the right way.
If it's too much the girl looks fake. If your guy doesn't want you to wear makeup at all I think he's in love with your natural look and doesn't get why you cover it up. He probably likes everything about you.
It's really gross-you ever had that sh*t in your mouth?