Marriage trouble help

Ok so my wife and I have been married for bout 2 years now,we had a fight about her male coworker freind,the reason ,my wife is a truck driver,the OM is a truck driver they got close because she trained him when he got hired on.they have known each other for about a year,the first memory I have of this man is my wife told me he got water on her and said infront of the other guy she was training look I got her wet.i let that go and she told me when it happened. Well the devolved a friendship and she has to take phone calls from him and others who need help.a little while goes by and OM invites my wife to have sausage and basically a dinner ,she tells me and at this point I don't really have a problem yet.well he says hey she has my sausage in her mouth and she likes it.this same joke is said many times for about a month I put up with it but he kept on saying it,in front of me while me my wife and him are on 3 way,my wife is a truck driver so she is not home a lot so we talk on the phone a lot and sometimes her freinds join the phone call that's fine.so I tell her that it's passing me off and making me feel uncomfortable, she says it's innocent and how he is but she will ask him to cut it out,well that goes fine for about a month he says the same joke the same way again,finally I say he man that don't sit well with me I feel uncomfortable can u cut it out not trying to be a d?&#.he said sorry ok,my wife and I agreed if he can't control himself and respect me then he has to go,we agreed.the other night he gets in her truck and there is a female trainie on the truck he says to me did you get pictures ?I said what!?he says did you get video?I didnt say anything didn't get mad.well long story short it didn't go well cause I brought it up and it caused a fight because she said it was the wrong time and she has a student on her truck.i screwed up and kept on wanting to know why she never says anything to him ?she gets quiet when the jokes are being told fyi no one's laughing but him.so the common thing is my wife is in every joke in some kind of sexual situation. I told her he gotta go,but she got so mad I am speaking to her with calm voice did not accuse her of a affair she asked if I was I said no,she yelled at me during the convo called me a asshole said it was the dumb thing how I was acting about it,mind u I haven't called names yelled or even raised my voice.i asked her to tell him they can't talk anymore because of the jokes.she made me do it so I did I asked dude straight up if he wanted to have sex with my wife.of course he denied it I pulled the dirty cop and told him my wife told me everything fess up,he didnt.well she is really pissed I made her get rid of the OM.now she saying she needs time before she takes her home time.and no I didn't get a set time nor did I ask for one.am I in the wrong,I trust my wife ,but that guy wouldn't stop.it hurts me that it feels like she is taking this guys side over our marriage. Help plz.edit*I will say that our fight did happen while she was at work with her female student on the truck ,the next day I did text her but I wanted his number so I could have the conversation that she didn't want to do.she picks up the phone,and yells so loud from inside the cab of the truck that the store she was unloading at called hr.that really pissed her off,she got probation for 6 months and she can't use her phone while she is driving.she used that as the fact of why she is mad. *edit thank you all this is a really good community you guys helped so much you don't even know,if we get divorced or stay together you guys have been very kind.