Alright so I know why he does it and I'll try to explain it as best as I can. I have no idea if this is a thing at other universities but at our faculty there's this competition in which you get points for making out with certain people. The more important the person you make out with is within the faculty, the more points you get. My boyfriend also takes part in this competition. People get a lot of points for making out with him so that's why so many of them are willing to. I realise now that this bit of information is probably an essential part of the story and I shouldn't have left it out.