How much staying in your bf/gf's place is too much?

@Melpomene If he's there that much he should pay rent too lol

@FairyGirlGemma I agree

@FairyGirlGemma and perhaps a docking fee. 😆

@Melpomene No harm in waiting for the right moment (not pressed for time and no one else around) to suggest sharing a cup of coffee or tea, and just ask the questions straight out,
"Do you feel you need more time alone? In general, how much time alone do you like to have? If you're experiencing stress over something, do you sometimes need more? Is there a favourite time of day when it's most important to you?"
Or if they are an extrovert you could ask, "Do you feel refreshed and energised by spending time with friends?"

If they ask why you're asking, you can share what you've seen, heard or sensed, and what set you wondering. You could also share how you feel about time alone, how it benefits you, and how things can get stressful if you can't get it regularly.
Once the flatmate seems to understand, you could make a request for a certain time of day when you'd prefer to be alone.

@hartfire Thanks for the suggestion!

@Melpomene You're welcome.
I hope it works out in a way that makes things easier for you both. :)

@SW-User Well I'd say occasionally is normal (with flatmates)