Am i a a** hole cus i want to have with my girlfriend before i leave for the army ?

so far we been dating for 6 months and i have never pushed her to do it or anything she didn't want to do. we talked about it a few times and i tell her the same thing every time "we can do it when your ready to im not going to rush you or anything" even her older sister told her to have with me already and when she told me that i said "it's up to you if your ready or not don't let her or anyone tell you what to do" we both just got out of high school and i have less then 3 weeks before i go out to the army while she goes off to school. im starting to think i should be dating someone elas. or would i be a really big a** hole if i said " hey lets have before i leave for 3 months to the army or ill just date someone elas' ? what should or shouldn't i do ?