I banged this girl a couple of times. We have a large WhatsApp group where she started to seek attention but I wanted to keep it low-key to not spoil the group dynamics so I didn't respond to a couple of her messages where she was flirting with me. We used to constantly chat privately but after I ignored her messages on the group, she stopped responding to my private messages. How can I reconcile with her? I don't think apologising will help and I think it'll only make it worse for me.