Help please

So few years back i spoke to my baby daddy in a sexual manner which was wrong and my bf kicked my out then we got back together and now few days ago my br found i spoke to my baby daddy because he wanted to know how his daughter is but i didnt tell my bf now he says he does not trust me anymore and he wants time apart to figure if he wants to be with me , what should i do ? Try and talk to him or just leave him be ? Because he says i didnt tell him i spoke to my baby daddy and thinks i was talking sexual to him.