It could be that it’s an ex you’re still carrying a torch for.
But the time they spend with their partner will make them feel better about themselves, not worse.
Something telling you that maybe this person you’re spending time with isn’t the best person for you to be with? That your current relationship isn’t what you had dreamed for yourself?
If so, then these are probably feelings you want to explore further.
So if you find yourself unhappy much of the time – and especially when you’re with your partner – then that’s a fairly clear sign that this may not be the best person for you.
In addition to feeling happy, a person in a good relationship usually has a positive self esteem.