TIMEtable love!?

I am writing this message under a weak condition.I had been suffering for the past 2 yrs till I can't take it anymore. it's abt my 41 yr old bf!I dont understand him.WHen i call him every hour or 5 times a day or more, i'm an angel to him but when i'm bz with work or even sick, and if i dont call him, he will accuse me tht i'm cheating him and i'm with another men or tht i'm a B****. I dont know why he has such split personality but i dont want to condemn him coz i want 2 know if i am in the mistake or not.When i ask him y can't he call, he pushes the blame to me saying tht i'm a bz women.for your kind info, i'm just completing my Masters and i'm a fulltime student. I work part time @ a law firm but tht is not an excuse for him not to cal me.For instance,2day i ws down with high fever and stomach cramps.I text him via phone tht i wasnt feeling well.He messaged and told me to tc.The whole day he did't call n i was fast asleeep.whn i awoke to cal,he didn't answer me and accused me.