<human>: Give me a shortened version of the text

Sorry for the throwaway, my girlfriend [20 F] reads Reddit though I'm [20 M] not sure if she reads /r/relationships.

So she's not really my girlfriend yet but I've been seeing this girl for about a month and so far nothing is too serious. I do really like her though and I hope to take our relationship a step further soon. Before I do, do I need to tell her about my dad being in the Vietnam war? I personally am 100% against war and I feel disgusted to think about what my father was a part of. I'm torn. On one hand, I would like to just pretend it never happened and not tell her. My father has passed away (from complications of the war) in the last few years so there's no chance that they will ever meet and we don't talk about it much in my family. On the other, I think it's the right thing to do, though it may end or slow down our relationship. We never have talked in depth about our parents and I'm not sure if or when I should tell her?
<bot>: Do I need to disclose that my father was a Vietnam war veteran? If I should, when do I do that?