can anyone give me advice

lil princess

on so my husband and I have been married for a year and 7 months and have been together for 2 years and 1 month. we have 2 beautiful children together and have our own home. well we went down to visit my family, we live really far away from them, and he went to his friends house for a couple days. well the second day he was there he kept ignoring me when I was asking him some important questions so I got on his facebook to see if it was just me he was ignoring or if he was ignoring everyone else too. well he was only ignoring me and I also found messages from his ex girlfriend so I obviously freak out cuz why is my husband making plans to see his ex girlfriend. I kept blowing up his phone and he wouldn't answer me. so I got back on his facebook and messaged the friend he was with telling him to trll my husband to call me. my husband FINALLY calls me, after his ex was suppse to be with him for a good 30 minutes at this point, and I flip out. I yelled at him and was screaming and crying and eventually hung up on him. well we ended up fighting over text and I ended up telling him he had 45 minutes to get back to where we were staying or me and our kids wouldn't be there when he finally did come back. it shouldve only taken him 32 minutes to get back but it took him 43 minutes, I was literally about to walk out the door when he got back, and we end up fighting more and I end up messaging her and finding out be had been talking to her all day. so I took my ring off and gave it back to him and told him I did want to wear it and for him not to touch me. its been a few days. since this happened and we have gone back home and I went through his phone online, because he deleted everything off his phone so I wouldn't see it, and fpund out he was on the phone with her for a half hour. I confronted him about it again and still his excuse was "I just wanted to catch up with her" we are still arguing about it and then it got worse last night. he got a message on facebook and tpld me to check it and I found this from his best friend. and I just idk what to do. I said something and he called his friend and his friend said "maybe she shoulsnt be reading your messages on facebook" I have no idea what to think or act or feel or anything. anyone have any advice on what I should do?