I'm dating someone who has been cheated on. What should I do?

Earn their trust gradually by reassuring them that you will remain loyal, but of course actions speak louder than words. Perhaps you can let them meet your friends and those who are close to you so that way they know who you hang out with when you're not hanging out with your partner.

Set time aside to spend time with her/him, let her/him know how much you love them and tell him/her that you wouldn't hurt them like that.

I've too been cheated on and the best thing you can do is let that person go because 9 times outta 10, the relationship was either draining or toxic due to arguments that mostly led up to the cheating and/or afterwards. Take time to gain the strength back with on you mentally and physically. Learn to love yourself over again and watch someone will come to love you better than the person who cheated on you

You should be patient and act carefully. Respect him/her because of a bad experience, not give reason to doubt your fairness.

Be kind to them. Best thing would be to not bring up the past in important conversations and be mindful of the things you say.

Comfort them and make them know that every guy is bad and that you'll never do the same. Put yourself in their shoes

Know that no one deserves to be cheated on and just support them. If they need reassurance, then provide that for them. That establishes stability within your relationship.

They’re going to be very suspicious and nah even accuse of you doing things you haven’t done. This is normal. They’re probably very insecure and that’s ok, just constantly reassure them even when they don’t ask

Being in a relationship means you should learn to trust each other and to build trust, it's not an overnight process.. it need times and commitment to do it. The more you trust each other, the stronger your relationship are.. Someone who has been cheated on, means he/she is feeling super insecure.. so what you both guys should do is to build trust. Building trust need both parties' effort.. so for this relationship to work out, both of you should commit to learn more about each other and build trust together :)

Try not to dwell on either of your past history. Be open and honest. If you think that you might stray, walk away.