Update: fiance taking pics of other women

I posted previously about finding out that my fiance had taken pictures of women's legs in public without their knowledge. He said he only did it once and was immediately ashamed of it afterwards, and never did it again.
He's agreed to go to counseling but I have no idea what category that would fall under. He's desperate to make things work and I don't know how to trust him again...I can't stop thinking about it. I just really need some support. I feel so alone and heartbroken.