Should I put my all in a relationship if im not legally married to a person?

I think the first thing we must all do is to take care of ourselves. And if we are in a relationship, it's fine to place importance on our partner, if we dont lose our sense of self in the process and if we remember that we are our own priority in this life.

Relationships last until they don't. Nothing is forever. Just enjoy your relationships.

You can put energy and emotion into non-marital relationships but you certainly don't want to risk your finances on them.

It's best to start off on a friendship level with someone when you are dating. Take things slow and then see what happens from there...if you fall in love.  Falling in love should be a mutual thing. I don't believe you should be intimate with a person until you marry them.  In that way, you're less likely of getting hurt.  Always take things slow and remember to enjoy each other's company.  I am sorry to hear about your mom.  This guy should have made a commitment and married your mother instead of someone else. Hope this helps.

The truth is a good relationship is neither giving the other your all or making it all about you. A good relationship is being able to find that balance - where the relationship nurtures both you and this other, to the mutual benefit of both.

I suspect your Mum's advice is coming from a place of hurt.

Sure because only putting in a small amount may cause you to break up, but don't become his slave.