Was I wrong to give green light????

My bf is a bs as well as all of us.  His dw cheated on him and they got divorced.  He began dating his exgf about a year later.  Looking at pics of them in the past I can tell he really cared for her.  After three years of dating, he found out she was seeing someone else.  He bowed out, and she thanked him for making her decision easy.  Well, of course the new guy didn’t last and she begged my bf back shortly after they broke up.  He told her that he would never date her again but he would remain cordial and if she needed a friend he was there.  She is a hairdresser and he would continue to get his hair cut about every two months. 

Fast forward three years later he began dating me.  He got his hair cut and told her all about me, how happy he was and how I was a good woman.  That night she called him and asked him to go to her house and give her an estimate on re-doing her kitchen (He is a contractor).  When he went over there and she began hinting around about them getting back together and that it was “Now or never” HOW RUDE!!!!!!

He kind of blew her off and left.  She began calling him and left messages asking why he didn’t get back to her.  He called her back and said that he VERY HAPPY with me and that he didn’t think it was appropriate to re-do her kitchen.  He then said he would no longer get his hair cut from her. 

He told me this and I was happy that he was truthful to me.  I told him that I have no problem with him re-doing her kitchen as long as it is platonic and he needs work.  I trust him and because of my ahole xh, I have been working on my trust. 

Now my friend has told me that it was wrong for me to say that to him and I should immediately tell him that HE IS NOT TO GET HIS HAIR CUT FROM HER OR TO WORK FOR HER….

Was I wrong to give him the okay to work for her? (I don’t think he will..)  But I am trying to work on my trust and would like some advice from my fellow bs’s…Thanks and God Bless

Christy