Im so fed up today

I am so sad today and really miss him.He text me last night because i told him i was going out he kept saying hows going he even sais he wished he was a fly on the wall while i was getting ready.He was texting me till about midnight then it stopped.I woke up this morning to a text from him saying sorry he fell asleep and did i have a good time,i said yes it was a laugh etc.Funny thing is he wouldnt normally text me at those times it was just cause i was out,now things are normal again i havent heard from him.why do i let him do this to me and why do i miss him so much after everything hes put me through???