I've been seeing dp since March, and stay with him every second weekend (he has his daughters 50/50). I'm a terrible sleeper and an early riser to boot, so I'm normally up at 6ish whereas he likes to sleep in until 9/10.
I just feel weird getting up and making myself tea in his house! He's the world's most laid back man so I don't think he'd bat an eyelid. I've also been single a looong time so probably just not used to the thought of someone else being in my house either, if that makes sense.