I think it's almost guaranteed he's cleaning up his cum. It's normal for younger guys to need to do that at least once a day and often more if time allows.

I'm also sure seeing a sexy roommate most days isn't quenching the desire.

So nice you are curious about men's masturbation habits. Maybe your neighbor's tissue indicates he masturbates a lot, but obviously, it is impossible to tell. No, of course you would not ask him directly unless you get to know him quite well and you both feel okay about discussing sexual topics. But as you say, you use tissue in a different way, and it may be obvious that what you discard is not because of masturbation. One of your bundles that includes a tampon or pad would be much bigger than what you need to clean up after masturbation, yes? You wonder now what your toilet paper trail so to speak reveals about your habits? And you try to interpret your neighbor's? How much someone masturbates can vary a lot from person to person and for one person depending on circumstances and personality. Maybe a couple weeks with no orgasms can go by, maybe only a few hours. I seriously doubt his waste tissue is anything to worry about. You do not touch it, do you? What do you need to be careful about unless you think he might have some sexual interest in you in some way? Are you worried he will openly masturbate in front of you or try to give you a peek? Has he been sly or aggressive at all? If not, maybe your new interest in his masturbation is making your imagination turn. What is he like? Can you trust him since you do share a bathroom?

What would you say is masterbating a lot? If it's once a day he is dumping tissue paper then that's pretty normal for most guys. I would just let him enjoy his alone time 😃

he is probably masturbating and using the tissue to clean up. once a day is not a lot. I used to do it several times a day. nothing threatening about it. he gets sexual release, is relaxed and happy. don't worry.

Now I am thinking, because we share the same bathroom, do you think I need to be careful? Sharing bathroom with a male flatmate always a little bit tricky...

But maybe I cannot complain because I also put my tampons and pads in that bin too, even though I always cover with toilet paper... Oh! Maybe he thinking I am also masturbate a lot because I put lots of toilet paper there too during my period

I would say he is masturbating ! What is a lot? I do it whenever I can

Yeah a lot of guys are on a day, it's definitely not a lot. I sometimes have one every day for weeks but other time only one a week. I'm guessing you don't go as much ?