How to make the guy have an erection?
it's not that hard. you can do it many different ways. you can kiss him, you can hug him. if your by yourself making out he probably gets hard unless there's something wrong wit him. alot of things, kissing his neck, and you'll know if you press your pelvis against his and you feel something hard. or if he holds you and your back to his stomach that hard thing against ur booty is him honey. and try other things too 'cuz most guys it's vry easy to get them excited. ask him, that'll turn him on too!
Honestly if you hug him on the couch or something tightly enough to make your pelvis area touch his penis and you feel it hard... Yes.. He is DEFFINITELY AROUSED AND WANTS TO GET TO BUISNESS!
Women have no idea how you make us men feel sometimes.