man says he dont like haveing sex no more!! help

so last night i was frisky and wated some sex well we ended up havein sex but in the middle of sex my man goes soft!! and it really made me up set he layed there for a min and still couldnt get hard at all !! he said that he is tired of haveing sex cause i bitch about him going soft ither befor ejaculation or after he ejaculated 1 time!! he cant seem to get it nack up !! he hurt my feeling so much last night!! what should i do i ended up sleeping on the couch!!?? its tearing our relationship up with this prb he has ? is it me!!! been togther for 4 years and have a child togther he is the love of my lufe