I think we differ on this point. If I was distracted by somebody kissing me when I was thinking about something I would be a bit irritated that they hadn't told me first so I could write down where I'd got to and pick up where I left off later.

I suppose it would depend on the proportions. If someone distractingly kissed me every time I was trying to think about something complicated, I might start to feel that that was all very nice but really there ought to be enough space in my life to include both kisses and getting useful stuff done...

I would also wonder why this person was hanging around my lab with nothing better to do than kiss people; for starters they could make everybody some tea.