Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Quick backstory : my current GF of 7 months was previously cheated on in her last relationship. She acknowledges that she has current trust issues. My GF sleeps over my place 5 days out of the week. 

My GF came back today from a 4 day international vacation trip with her girl best friend. During this period, I masturbated once back here at home. My girlfriend is now back and we're on the couch watching TV. Guy in TV starts watching porn, which prompts my girlfriend to ask me when the last time I masturbated was.

The last time she asked me about masturbating, I gave her an honest answer, and she got very upset. I don't see much of a problem with masturbating. We've had a lot of small arguments recently, so part of what we agreed on when we made up is that she'd work on the way she reacts to hurtful truths, as she normally shuts down and stops communicating. 

As my girlfriend asks me when the last time I masturbated was, I white-lied and told her it's been a while. As she persists with her questioning, I say that it's been a few weeks. A bit more questioning and I reveal it's actually only been this weekend. I then sincerely apologize profusely about lying, explaining that I was wary of how she'd react, based on her previous reactions. 

GF hates the fact that I lied, and equates it to "if you lie about this, you can be hiding anything". She associates white lies to lies with cheating. I try to explain my intentions and my line of thinking, but she's had none of it. She's since left and won't be spending the night. 

I understand I'm an asshole for white lying, but in my head she might be over reacting a bit. She's also ignored my apologies. 

white lying to my girlfriend about masturbating