Fingering

Ok so this guy I’m seeing won’t finger me even though we are really comfortable with each other. He said that he’s done it before but was very discouraged from it because the last girl he did it with said he wasn’t good. I want him to comfortable with me to at least try it out as some foreplay. He has very nice long hands and it seems like his hands would be good for it. I think it’s also mainly because if a guy nice hands then it turns me one so much. Any tips to get him comfortable with it?? It would be very helpful.