Inexperienced Widowed Stepmom Accepts Stepson's Help

I have been a widow for a few months now and my stepson today scolds me for the way I deal with this bad period. "You are always dressed in mourning, you have to try to cheer yourself up and then you have that young boy, Francesco, who you hang out with ...". Here it is, Francis. I've been seeing him for a few weeks, I'm very good with him but I don't think I want to go on. "I found an excuse for tonight and we don't see each other". My stepson gets angry, doesn't understand and asks me for explanations. At first I didn't want to say anything, but given his insistence I confided in him that Francesco has booked a room in the Motel for tonight but I don't feel ready yet. I have only had one man in my life, I have not had any other experiences and certainly men nowadays have high expectations, so in order not to disappoint him I decided to break off the relationship immediately. "He would have left me anyway". My stepson absolutely disagrees and offers to help me. I don't understand how.