Why am I avoiding my partner?

Why am I avoiding my partner so much? i can explain more if needed, but I've been dating my partner for about 5 months now and she is wonderful. Recently, I was kicked out by my roommates, so I am living with her until I find a new place. The situation has left me extremely depressed, and it's been hard to socialize with anyone. I'm usually a quiet guy, but I am barely talking rn and haven't found a good motivation to be social. My partner is very supportive, but lately her own stresses have been adding to the mix. I enjoy spending time with her, but I haven't been talking as much. i still try to be around her, like cuddling her on the couch and sitting near her while she does things. She is feeling like I don't give her enough attention, and I feel guilty for being emotionally unavailable. I'm having a hard time understanding why I am reacting like this. Anyone have any advice?