Instead of staying at home with her, as a couch potato, do something with her. Visit a museum. Go to a theater. Spend an evening at a concert hall with her. Walk her to a place where she hasn't been before.
Give her the most precious present: your time.

Find her a new boyfriend, lol j. K.

🤷‍♀️

Well you can start by asking her why she seems unhappy. That's what my boyfriend does when I'm upset. Sometimes I hit him with the "I'm fine leave me alone" but he knows to keep pushing until I eventually tell him. It always makes me feel better to talk about it.

Stop asking us & ask her instead. Have a heart to heart.

ask your gf what you can do for her. we don't know her

Talk to her. Listen. Be kind. Occasionally spoil her. Remind her she's special.

If you have to ask, you are nothing special to her at all

Give her money

Money, oral sex, and food.

Thumb in the bum

Give her a good slamming

Show her that you love her