overdramatic

US /ˌoʊ.vɚ.drəˈmæt̬.ɪk/
UK /ˌoʊ.vɚ.drəˈmæt̬.ɪk/
1.

showing much stronger emotions than are necessary or usual for a situation :

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When I say she saved my life, I am not being overdramatic.