How can you heal and find someone who's truly available when you've been involved with a married person?

Considering the evolving landscape of relationships in India, what is one non-negotiable quality you believe is essential for a lasting partnership?
My boyfriend had an anger outburst and I left the house. It's been 3 days and he still didn't contact me. What should I do?
If a boyfriend followed many friends including female more than male on Instagram, what makes a girlfriend think?
Why does my heart start beating really fast when I get in a fight (verbal)? How do other people stay calm?