<human>: Can you provide a brief rundown of the text in within 3 sentences?

I'm a little too laid back when it comes to monitoring my finances. Using direct deposit and automatic bill pay had gotten me to a point where I don't have to pay more attention to my account than checking it about once a week to make sure I have at least enough in my account to cover mortgage + bills.

This worked fine for single 20 something bachelor me, but recently I started dating a girl that likes going out a lot so my spending has skyrocketed. I realized my old approach to finances was pretty irresponsible and decided I was going to get my adult on so I downloaded a budget app a couple months ago. Haha! No more irresponsibility for me, I say.

This app in particular looks at your spending history per month  and estimates what your monthly budget should be, cool right?.  I check this, and then check my last paycheck, and realize my monthly spending is over by like 500 bucks. Panic ensues. I immediately start cutting whatever I can: restaurants, bars, alcohol, uber, etc.

This begins affecting dates and becomes a huge source of conflict between us. We've been fighting pretty much since I downloaded the app. Today we just had a huge fight because I was trying to find ways to not go to this expensive new trendy place that opened nearby -- she just stormed out and went to stay at her place.

Something clicks in my brain and I decide to go check my bank account. Lo and behold, I'm such a dumbass that I didn't realize I get paid once every two weeks instead of once a month. I've been working at this company for 2 years. Now I have to figure out whether I confess how stupid I've been to her or stop being such a penny pincher and hope she doesn't ask too many questions.
<bot>: I've been fighting with my girlfriend for two months because I tried to create monthly budget based on a paycheck for 2 weeks.