I need advice! Facebook Friends...

So my husband has a thing for following or adding other females on Facebook. We have had a couple of problems in the past because of it. I feel disrespected. Should i be upset about it? He knows it upsets me & he still does it. Most of the time when i get his phone i delete them. But it also makes him mad when i confront him about them. I'm just at war with what to do. It seems no matter how many time i tell him not to do it he still does it.