Best relationship advice I can give? Stay single for at least a year after it ends. If you don't take the time to figure out what went wrong and heal your own wounds, you'll just end up bleeding on someone who didn't cut you.
Sex is the most intimate thing two people can do. If you can repeatedly share that intimacy with strangers and walk away without a second thought, I don't believe you have capacity for love and bonding. You basically exist as an animal. I have never understood hookups.