IF this is the same guy you mentioned in the other thread, then you are not using your self-respect. Giving what you call 'head' is something that is done with couples who have a deep bond between them, and not just an on again, off again thing - and especially, if not married or having had an HIV test - never should be done without a condom. So, if you are lucky to not have caught something you will have to suffer the rest of your life for, leave him out to dry and find another patsy for his favorite past-time. He'll tell any girl how much he loves her because he does not know what love is - just what his little head feels. So think about it and make a mature and safe decision. You are still young, and should not get the reputation of someone to 'load' off on anything they say the magic words.
Kids in school age don't know the real meaning of love and everything that goes with it, it's a growing process between two people that mature together.
Again, tell him to go 'play doctor' with another patsy and keep your self-respect and dignity.
Good luck, and please keep us posted.
There is a big difference between LUST and LOVE - you'll find out the difference soon enough.