I'm not having the same issue a lot of others are, but I'm a woman. They can be seen a sexual, but come on, we're talking about 17 year olds, not 4 year olds, you can't tell me that a few months older is going to make a difference. I also don't think they are awful technically, its a style, maybe not my favorite, but whatever. There have been a few photographers who shoot to push buttons, and people pay $$$ for their stuff.
Keep shooting Ninja, just try to have a reason why you shoot. Clearly at 17, you're passionate about girls, and this is a very forward( and effective) way of showing it. I'd challenge you to push that further, and try to show the same passion with subtlety.