If you use your painful experiences to help you tap into emotion in your work you are re triggering your past experiences and will have to contend with that trauma after the play/film is done.
If you allow yourself to fully feel the trauma of your character you will also need to deal with that residue after the play is over
If you are aware of your ability to absorb try and get out of character often- in between scenes and when the play is finished each night and when the play closed- take time to RECOVER…maybe you will have less emotional traumas than most.
And a long and lovely career as well as home life.
I also suggest consider NOT marrying an actor. Actos by nature are transient ethereal beings…and one in a relationship is quite enough.