Maryland State Police?

I need opinions on what people think. I recently took a polygraph for the MSP and I don't have a record other than a speeding ticket and I ped my polygraph. However my gf and I get into arguments that sometimes get physical (on her part, I'd never hurt her) But I had to admit to this and I am worried they might think I wouldn't be a good Trooper because of this. Any comments? Anything will help but only serious answers please. Thank you all for your time.