When someone says that your partner is lucky to have you, it is a compliment or means something else?

When someone says that your partner is lucky to have you, it is a compliment or means something else?

Today we had the first home pool party of the year, and among the invitees we had my business associate of my other question What do you do when a couple fights in front of you?

She came on her own this time, because her husband was sick, or so she said. We were having some drinks while my wife was swimming in the pool, and during our conversation it came to me to say that I am very lucky to have her. She replied that instead she's lucky to have me and joked that if she was in her place she too would have "rushed to bake out babies" to make to keep me, referring to her pregnancy.

I took it as a compliment, but I can't help to also think she's bitter and having problems at home and this her way of unloading.

When someone says that your partner is lucky to have you, it is a compliment or means something else?
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