My husbands leaving me

My husband is currently in the airforce and we’ve been living apart for almost six months until I can join him which was supposed to be in May but with the coronavirus military bases are quarantined and I can’t join him until it’s over. Yesterday he just told me he wants a divorce. He says since he’s been away from me he’s been happier, enjoying his life more and he can finally be himself, but he won’t agree to work on it. I don’t know what to do, he lives states away and I can’t even see him in person to talk to him. I don’t want to harass him but this is my marriage how can he not even want to fix it? This is such an impossible situation