So I'm having my first ever LTR and ive been getting a lot of comfort tests. Things like "I felt this week like you only want me for sex" or "I feel like you didn't want to see me for the past couple of days". How should I respond to that?

Another thing I've been thinking about is that we see each other every day cuz we study and live in the same campus and sometimes I even feel like I should disappear for a little (because I want to keep our attraction from fading) but then she just gets really sad and feels like something in our relationship is off or that I don't want her anymore (naturally she's more needy than me in the relationship although her smv is really high). How do you deal with that stuff? Any tips?