I’ve lived with a girl for 5 years. She became the closest person to me in my entire life. She was with me during the worst times of my life including health issues. I gave her everything. Took care of her the way I probably wouldn’t do to any other person, including a relative! But at some point I had nothing to give anymore. All I had she already saw and got used to it. And then she left. Why? Because you should never give up filling yourself with something new, fresh and interesting before your partner will drink it all in one sip greedily!