Tiresome pal flirts with my husband and puts me down

Dear Coleen I'M A woman in my mid-30s, so probably too old to be getting stressed over how a friend is behaving but here goes.

I've known this particular friend for more than 20 years.

If I'm honest, she's always been competitive and prone to envy but I guess when we were younger it didn't matter because it was over clothes or make-up or hairstyles. She was always the sort that if I had something, she had to have it, too, but a better version! Now, though, it's harder to brush off her behaviour and it's affecting my happiness.

She's single, although she does online dating and hooks up with guys now and again, but every time she's over at mine, she flirts with my husband and it's not subtle.