What do you think my exes intentions were?

I was in a long distance relationship with my ex for 5 months we had planeed that i would move down in july .. But all of a sudden out of the blue he started sending video pxts to a female friend of him driving a truck at work , also saw a text from her asking him for a pxt, also say a text to her from him saying you look more maori then me... I confronted him about this and his response was i wasnt sending my cock to her but i dunno seems a bit suspect.. Anyway i had a gut feeling something wasnt right he changed his facebook password which he orginally gave to for unknown reason, rejoined a dating website and eventually broke up with me through text... I tired to talk to him in person but he kept yelling at me and he insisted on being friends ..then he stopped texxting. Saw him again he said he regreted what he has said but it's too late to take it back ..well anyway hes stop texting but i miss him and would like to friends as we did alot of fun holidays and experiences..i recret the mean things i said but dunno how to apolgnise