I I broke my promise to wait until marriage and now I feel guilty

My boyfriend (H21) and I (F27) had sex before marriage.

I ALWAYS told him that I only wanted to do this after getting married, and he would say, “That’s fine, we’ll wait until marriage.” But whenever we were together, there were kisses and some fooling around. Until recently, in one of those moments of kissing and touching, we ended up in bed: he didn’t even ask me if I wanted to do it or if I was ready, he just started taking off my clothes, put on a condom, and went ahead.

I was so disoriented that I didn’t even have time to think and say whether I wanted it or not, I just accepted that it was happening and we had sex.

Now I feel awful. I realized that we sinned, I sinned! I wasn’t strong enough and let the flesh speak louder; in the heat of the moment, I just gave in. And now I deeply regret it. I don’t want God to turn away or hide from me… But I lost something very valuable within me, it feels like I lost the purity I had, and I’m extremely remorseful! But now I can’t go back.

Should I confess this to a church leader? To whom? What should I do? If I ask God for forgiveness and talk to my boyfriend so we don’t do this again (because honestly, I don’t want to do it again…), will God forgive me?

I’m sorry, I feel really bad and ashamed, but I’m a bit desperate and don’t know what to do…