Give one relationship lesson you learnt too late.

Loving someone who is married will never be right. Love itself isn’t wrong, but I should have set boundaries and restrained myself. Once you invest your emotions, letting go becomes difficult, and heartbreak inevitably follows. 

It’s important to wait before entering a relationship to be fair to everyone involved. If two people are truly meant to be, they should start on the right path. 

The idea that a third party can be content with whatever is given to them is a lie. The deeper you go into the relationship, the more you will want—more time, more commitment, more of him.

@BlatantHonesty

playing along and not having the hard conversations and smoothing things over at the time seems like compromise but it often is you just not respecting yourself to get what you need or deserve. 

 That approach NEVER works in the end,  resentment and loss of respect for your partner cannot be repaired.  If i had taken the path of fixing instead of smoothing things over and doing things he wanted i would not face a lonely while in a relationship now. 

Keep your emotions in check. You might get angry for instance and, while your anger might be totally justified, throwing it all out damages two persons.

Try to recognize when you start feeling emotional, do breathing exercises, go for a walk, just take a break. And ask yourself "what is really going on here".

Trying to be anything and everything in the relationship.

@BlatantHonesty, your childhood trauma and examples you had from your family growing up with somehow have an affect on your when you’re an adult in your own relationships romantic ones. This also includes as a parent if you have kids.

work on getting rid of your baggage asap! Work on your inner self asap! 

@BlatantHonesty

After a break up and patch up they don't instantly falls in love again... Maybe they still love you but you guys broke up once(and it's most likely because of loss of attraction) the dumper didn't hit a switch and dump you but they were probably thinking about it for some time... So if you ever patch up again don't think it's back to normal but both of you should know the consequences of the break up

Don't lose yourself in the relationship, enjoy time together but also keep practicing your hobbies and look after your social contacts outside of the relationship too.