I don’t think I have ever finished with a guy

Okay so back in high school I dated girls and you know had sex or whatever and it was very nice then one day I decided to try out guys so every once in awhile I can finish but it takes a super long time and I know this is tmi but once I feel like I’ve finished I’m dry down there, there is no liquids coming out of me what so ever and it’s not super pleasing, before I started dating my current bf I had sex with my friend who is a girl and she went down on me and it was amazing like I haven’t finished like that ever. So I don’t know what’s wrong with me I definitely enjoy sex with guys very much I just never finish or have anything come out of me is that normal ?