Going for a romantic weekend to Paris sounds like a great idea for two people in a relationship, but be careful how you share this information. If you say, „We went with my girlfriend for a romantic weekend in Paris“, it suggests that there are at least 3 people there. You, your girlfriend and one or two other people. This is not so romantic!
It may work in Czech to say it like this, but not in English. Instead, you have to say, „I went with my girlfriend for a romantic weekend in Paris.“ This way, it is clear that it just you, and the person you are going with.
There are ways around it. You could also say, „Me and my girlfriend went to Paris“ or slightly more formally, „My girlfriend and I went to Paris“, or if the listener knows that you are already talking about just you and your girlfriend, you can simply say, „We went to Paris.“
Let’s put a couple of these phrases together:
A: Last weekend, I went with my husband to see the new Brad Pitt film.
B: No way! Me and my husband saw it last week as well.