Losing interest in old hobbys

Honestly, I used to do a LOT of stuff, I used to go to the gym daily (had to quit due to an injury) or play videos games with friends multiple hours a day on the daily, or hang out with friends whenever I could, or just eating (that’s old, I used to he a fat chud but I’ve lost a lot of weight) and now, lwk all I do is spend my free time texting my BEAUTIFUL gorgeous girlfriend, and playing games IF she’s busy or gone and even then I don’t really feel like playing games anymore? And as for my friends…I lwk havent been talking with them consistently…and now I’m just kinda boring, my whole routine is just calling and or texting my girlfriend all day if possible, trying to eat a couple meals a day, and then sleeping…I don’t do much with my life now…even with school it’s the same routine… AND IDK WHAT TO DO BECAUSE EVERYTHING I USED TO DO SEEMS BORING NOW