Husband seems off lately

Been married for two years — have 2 babies (18months and 6months)

He tries to “be nice” to people but it seems like it’s only women he tries to be nice to.

Makes little comments that just seem flirtatious and out of line.

Sexual Intercourse has lessened significantly and it’s not that I don’t try he says he loves me to death and that he couldn’t be more I love but what is really going on.

Am I just over reacting and being overly jealous or what

Every time I try to talk to him about stuff he flips out and says he ain’t arguing and ain’t nothing wrong. Idk what to say or do.

He pretty much just shuts me out