Me and my ex husband are trying to decide if we should lift our son's punishment

I made a post wondering if my son's dad was being too harsh on him. He bought our 15 yo son tickets to a concert then found out our son was being a bully. One of his friends other friends likes Sabrina Carpenter and our son was bullying him and calling him homophobic names.. So my ex had him buy him I'm sorry gifts and made him resell his tickets to buy the other boy tickets for Sabrina Carpenter. He apologized and I completely understand how stupid I was for even questioning if that punishment was too far. Bullying kills people. I understand. Well now my son is getting along with the other boy and he confessed to that boy that he liked him. Which I suppose explains the bullying a little. Well the boy invited my son to go with him for the concert. Since he has apologized and made right with the kid and it's not like it's the same concert he was going to before should we let him go or would that be seen as going back on a punishment?