<human>: Could you distill the essence of the text into 1-3 sentences?

Hi Reddit,

My girlfriend and I are in college, and live in a house with 3 other roommates, all of which are her friends.

Today is the second anniversary for me and my girlfriend, and we went out to a nice restaurant for dinner, but everything fell apart when she started asking me about something that happened two days ago.

Two days ago, me, my girlfriend and one of her friends (lets call her A) were watching The Imitation Game in the living room when suddenly A started having a gigantic stomachache. When the movie was done and she wasn't better, I asked her if I could get anything for her, and she asked if I could get some Tums. So I go out, get the tums for her and after taking them, she feels much better.

The problem is that A is relatively lazy, and is always trying to get me to help get stuff for her (since I am the only roommate with a car). So, my girlfriend is mad at me because she thinks that I'm letting her take advantage of me. Apparently A gets stomachaches all the time, and my girlfriend thinks that she can just take a Tylenol or advil and it will do the same thing.

Naturally, I try to help out my friends if they need something and I can do something to help. Earlier this year, my ex texted me late at night asking for a ride home from the hospital since she was having back issues. Since she has had a major back surgery before (and has a permanent metal rod in her back) I went to help her out. My girlfriend thinks that she could have just called a cab and is just taking advantage of me.

I tried to find out why she is so mad about it, and she says that it seems like I "enjoy being taken advantage of".

Am I doing anything wrong? I feel like she should be mad at the others (if they were intentionally taking advantage of me) if anything. How should I get her to understand that I'm just trying to help my friends out?
<bot>: girlfriend thinks that my friends are taking advantage of me when I help do them favors, and gets mad at me because it seems like I "enjoy being taken advantage of".