My girlfriends wants to keep my sweatpants?

My girlfriends clothes got wet in the pool so I gave her some of my sweetpants and sweetshirt the next day she told me she slept in my sweetshirt and is still wearin my sweet pants she said shell give the sweet shirt back cause it's pretty big but the sweetpants il have trouble getting back cause there really comfy. What all does this mean does she really only like em cause there comfy or it makes feel I'm there cause there my clothes or wat idk wat to think any advice