My husband's porn use is killing me

So I guess I always knew he watched porn... it never bothered me before, but last night I was using his phone and a site popped up. I was kind of curious so I checked and saw that he's on these sites multiple times a day. We have sex maybe 3 times a week and I feel like I'm always having to beg for it, yet he's watching porn 3 times a day??!!! Not to mention all the videos he views are of skinny small chested 19 year olds. I feel like something in me just died last night. I've been googling all day about porn addiction and feeling insecure after finding that your spouse is using porn. The articles vary from what's the big deal to it only gets worse get out while you can. I guess I'm just lost I've been like a zombie today. I've broken out in tears like a billion times and I'm not sure if I even want to be wit him anymore... any advice??