Eh, feel guilty if you want. Just apply for jobs anyway :)
He's just so nice about everything. Like me taking half-days off every other week for dentist and doctor appointments, and occasionally showing up late when London transport has yet another crisis, and everything.
No, you shouldn't feel guilty. (But I totally understand.)
Eh, guilt is normal, cause yer a nice person, and so are they. But they understand when they take you on as a temp that you will look for more stable stuff.