Type of affair

My husband had an affair in back end of covid 2020 12 months after celebrating our silver wedding gazing into each other's eyes all night. Through covid we was really happy, he went back to work had to work away 14 days then home for 3 nights then away again. Loving husband brilliant dad and grandad real family man. The job finished he worked local home every night then 4 days before our 26th anniversary I found out he had been having an affair not for long only about 6 to 8 weeks, his excuse was he felt we was in a rut! The whole world was in a rut we couldn't go anywhere, then he said he loved me but wasn't inlove with me! Typical excuse, then he loves me but not like he used to love me another excuse. Long story short is it love, lust or limerence? She's only a few years younger than him about 60 now 4 years on he's still with her but it's her house not his, he lost his daughter and grandson's over it for a few year's thankfully he is back in their lives and comes over for weekends on his own. I still love him with all my heart and I know he still loves me we are now divorced but for the past 18 months we have been seeing each other if he was truly happy with her he wouldn't even come and be with me. It's also true that he has definitely down graded, what goes around comes around. I still can't give up on him and even though we are now divorced I just want him to come back home.