Calculate end date base don Start date + 6 months

Hi there. Hoping this is an easy solution.

I have 2 textboxes we can call Textbox1 and Textbox2. Textbox 1 is a start date that the user enters and i would like Textbox 2 to change based on the date that is in Textbox 1. I want Textbox 2 to show an end date 6 months after the start date.

Is this possible?

I basically want to do the same thing EDate() does but in VBA

Any help is appreciated