In college, the living space is more confined so it’s common to be physically close to your friends. It used to bother me a bit because I’m not a very touchy person, but having skin to skin contact is a a nice cozy feeling.
I used to not understand how people can start dating so quickly after knowing each other for such a short period of time, but I think I do now. Because everything is physically closer in college (except certain classes), I can see how people can become fast friends and expedite the process of knowing one another. All your friends are just a quick walk two to five minute walk from your room, and it’s common to see them everyday including weekends, eat together, and stay up with them until the wee hours in the morning.
Smaller environment equates to a nice comfortable close feeling.