GUYS, when is it ok to take a number 2 in your boyfriends house?

so i have been dating this guy for 7 months and i was wondering when is it ok to....you know in house. i live in the dorms and he lives by himself in his own 1 bed/bath apartment and room is too far to do my 5min business .we hang out ALL the time, and sometime after holding it for 3 hours, i have to go. i would tell him i have to go to the store and buy something when really i'm going to go poop lol most ppl are embarrassed to poop in a public place and i would rather poop there instead of my mans house. so when is it ok??