3 years & I still love him

3 years ago I met my first love, before him all of my relationships were abusive both physically and mentally and some how I ran into him and he showed me what love was. My house hold situation was horrible to the point that I was sent off to another state because my parents couldn’t handle me anymore. Me & him tried our best to work things out but long distance made everything harder. We loved each other unconditionally. As time passed we both took our separate ways, through all of this I still loved him and couldn’t love anyone else. Long story short I recently moved back but I live in his mothers house with him, he is leaving soon back to Europe and a part of me feels so heart broken because I still love him. I know it’s time for me to move on but I need advice. And just to clear things out I only live there because she offered me to stay with her since I could no longer be with my family, she treats me like a daughter and wants the best for me...