Is this the only solution?

Will i truly not be over her until i find someone else?

Its been more than 6 months, she moved on, dating someone else much much older, and ik i dodged a bullet with this one, yet im always anxious ill run into her.

Considering going to therapy too, but truly believe that when and if i found the one, that will be the only time my anxiety will go away, wdyt?