Should I contact my ex?

We haven’t been in contact nearly 6 months. Although he tried to reach out to me I ignored. There are many reasons for not wanting to talk but the main reason was the relationship got toxic before we broke up. I not only lost my love but also a friend. I just don’t know why I miss him so much. I think of him lately and just wish to see him everywhere I go. I’m not sure if I wanna talk to him bc I wanna feel safe again or to restart the relationship. I also wanna check on him if he’s alright and what he is doing.
Would it be good whatever the outcome may be to contact him? Even for just a closure?
Should I contact my ex?
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