Name of soft porn movie from the 90s

It was a 90s soft porn movie, first scene a guy celebrating his birthday and a blonde, second scene i think same guy with two other women then one og the girls goes for a shower leaving the guy and girl to finish the scene, third scene in the bathroom, the first blonde and the girl of the threesome that went for a shower goes in a lesbian sex, i think there was a fourth scene with the birthday guy with another girl, but dont remember very well, also there was a nerdy guy who appeared around from time to time, just to talk.
P.S. the attached image/link does not refer to the actual movie, its just an image similar to the one I remember from the movie and uploaded just to be able to post, thx