Meaning trap
go out
have a romantic relationship
To be in a romantic relationship with someone; to date someone regularly.

Don't mix these meanings
Same phrase, different job.
To be in a romantic relationship with someone; to date someone regularly.
'go out' also has the more basic meaning 'leave home socially'; this is the advanced sense.
Hear it in context
Notice where the phrase sounds natural.
I heard that Anna and Mark are going out now.
Many young people start going out with someone in their late teens, which can be an important part of their social development.
Fix the pattern
One small grammar move makes it sound right.
Not: She's going out her boyfriend.
Say: She's going out with her boyfriend.
'Go out WITH someone' — don't drop 'with'.
Which sounds natural?
Tap the one a native speaker would say.
'Go out (with)' is how people actually describe dating. The formal version sounds like a form.
Build natural chunks
Words that usually travel with it.
go out with
- with him
- together
- for years
- since school
Don't confuse it
Related
Other meanings and phrases to compare.
- go out (leave home socially) — 'go out' also has the more basic meaning 'leave home socially'; this is the advanced sense.