I think it’s really more complicated than that. I mean, define “feelings.” I think it’s natural to still be attracted to someone whom you loved and had an intimate, sexual relationship with. Is it normal to be in love with someone 15 years later? The answer depends.

I agree with you “everyone has feelings” but he is expressing it as “I am in love right now and if she would become single again I would go for her in a glimpse”