What age was your baby the first time you left them overnight?

Yep, 4 months. I left my daughter with a good friend for a night out.
For about 6 hours.
You have to let go sometime, and trust me, as an “older” woman (52) you MUST make your relrtionship a priority or baby won’t have a family somewhere down the road.

After I weaned each of mine; while nursing I felt better hanging out with them.

Around. four months for both.

I too was lucky in having my in-laws nearby and enthusiastic.

Similarly to @Coloma and @gailcalled, we went for our first night out (a few hours) after our baby was about three-four months old. It was much longer before we went away overnight. I can’t remember how old they were but they were a few years old before we left them overnight. I didn’t have close relatives who were able to care for my children overnight though.

I think it’s a good thing to try to have some couple time if you have in-laws who are able to look after your baby. I would probably start with just an evening. You will probably fret more than your baby will, but it can be a bit of a transition leaving them with people, even people you trust, for a few hours.

My son was 5 months old. I had enough breastmilk pumped and frozen for a weekend getaway. We only lasted the one night, and had too much separation anxiety, so we went home after just the one night away.

We had an evening out for a wedding when my son was three months old. It worked because m parents lived about 2 miles from the reception, so his mom left to feed him and then came back.

I think we went for a movie when he was 6 months. But it was a long time before my ex stayed away from our son for a full night.