Kung nagawa nya nung una at nasundan pa ng pangalawa at pangatlo, obviously gagawin nya rin yan ng paulit-ulit.
I'd say find someone better for yourself. You deserve someone better. Trust me, I've been there. However, I am not saying it's that easy to let go someone you love and care so much. That's why it's hard. Nevertheless, it's life, your happiness and your decision to take.