See that is my issue to Rhonda

Yes at first it was on Liz...she did that and Jason agreed.

Then however Liz took charge. She went after the life she wanted. Jason was the one who was always unsure and backed out.
He was a coward. When she finally was willing to be with him (all he claimed to want )he would pull back and end things.
Sure it was under the "danger" issue, but still she trusted him to keep them all safe. Jason did not trust himself to do it.

Think Jason thought it was easier to not try , than risk it all and lose everything
In the end , he lost it all anyway.