Feeling conflicted as what the next step to take and is it really the end….

I have been with my husband for 25 years and married for 10 years. We have 2 wonderful daughters 8yrs old and 3yrs old.
The past year has been up and down but this Summer just hit our lowest and the divorce came out which I initiated. I felt he never really gave me the attention or time I needed even though he said he does. He does a lot for the family. In his mind he can never meet my standards and feels nothing he does is good enough. We have not shared the same bed the past year as well which I too initiated because I have a hard time sleeping with his snoring. He blames his weight, I felt if that’s the case why he can’t lose the weight for and we can be in the same bed again. Over that Summer that we both decided to work it out and I was willing to change but I just felt he wasn’t there anymore although he said he doesn’t want to end it. However today I found he’s been in an online relationship with a woman close to a year now. He said he’s never met her in person. They have been chatting close to a year with the word I Love you thrown out. They seem to talk all day until he goes to bed. The woman lives in another Country. I also found old photos of other women. I don’t know what to do with this…I still want to work it out but I know I could never trust him. He said he loves me nothing had changed but also he knows I will never forgive him for this. I am so lost… Pls need advice…