Dd I lie to my fiancé?

My boyfriend and I broke up, we dated for six months. I went on to finish college and I think he had a lot of issues with himself that he needed to work on. There was a period of about 10 months when we didn’t talk or say a word to each-other. We got back together after that, and a year later we are engaged and in a really happy healthy relationship. One of the things he asked me before we got back together, was if I slept with anyone and I said no. I did date someone for only about two months when we were apart, I never had intercourse with that person but we would sometimes fondle each-other and a few times he would suck my boobs and grab them and hold them and that kinda thing. We never had intercourses or oral sex though.

So I told my SO when we got back together I never slept with anyone I just dated someone. Why do I feel guilty though? It feels like I lied but I don’t think I did?