It kinda makes me feel a little exposed that a lot of people on here have seen my tits.

I can understand how exposure can make one feel exposed. As for feeling small or embarrassed, your body is your body. So long as it's keeping things between consenting adults then I would say it is neither good nor bad. The only opinion that matters on whether that was okay or not is your own. So I hope you don't just feel that way due to social pressure.