Quick or long it's very dependent on the various factors like mood, last time we fuck, how sober I am, dirty talk, positions, and so on.
I remember back then when my wife was my GF and we start fucking for some period I was cumming in seconds, I even remember moments when after very long foreplay I slide my cock in her and cum immediately, it was bothering me very much because I never have this kind of problems with any other woman before, I even was thinking she could leave me because of that, but after some time "the ice was broken" and I start fucking her good and long as with many other women before her, I think it was psychological effect because I was very deeply in love with her and I was dreaming to have sex with her for a very long time.
But till today there are days when I can cum in 2 3 minutes, I might be very aroused, or I could think about very dirty things, or even she could tell me dirty things which makes me cum. But most of the time I last much longer and fuck her in many different positions (I love changing positions) during one sex
Just remember if you are a quick cummer you can always use your fingers, tongue, or toys to satisfy your woman 😉