Christian but sexually active

Is anyone else conflicted with their beliefs? I was always taught “no sex till marriage” but I had sex with my first boyfriend (which I regret, I was kinda pressured into it) but I’m absolutely in love with my current boyfriend and I don’t regret anything I do with him. I used to feel guilty about it in the past but never with my current boyfriend. I don’t feel like I’m doing anything wrong and now I feel guilty that I don’t feel guilty