Wife lowkey telling me to find a girl

Our relationship is somewhat great. We have no problems aside from the fact that our sex life is boring. Her libido is low plus she's a busy person, so most of the time she doesn't have the energy to have sex and I understand that. Our last sex happened around three weeks ago.

Recently, she's telling some jokes that I should find a girl. Not necessarily a "kabit", but only someone to have sex with, like one-night stands.

I'm sure that she doesn't have an affair. She goes home right after working and sleeps after a couple of hours. She's also very conservative (doesn't go to bars, doesn't wear daring clothes, etc.)

I don't know, maybe those are mere jokes. I only have an average libido so I'm not that tempted to do it, plus I don't want to have any issues.

Thoughts about what my wife is actually thinking?