Friend is jealous of relationship

When we're single, we all get bugged out when our friends have dates and we are sitting alone at home with no one to talk to, but it shouldn't go to the extent where she doesn't want this happiness for you or can't understand it. It's really childish. Make one night a "girls night." And stick to it if you wanna keep the friendship. Think if there is some truth to what she says? What if you are spending too much time with this guy and neglecting your friends? Every relationship needs a good balance.