<human>: Summarize the given text in a few sentences.

So I just went through a breakup and my ex was kind enough to tell me what changed from her perspective. One of the things that she mentioned was that she was happy that the relationship never led to her feeling insecurity or anxiety but the other side of that was she didn't feel butterflies or fireworks either. 

I've been told similar things in the past from other girls I've dated and I've definitely been involved in games of tug of war with my heart strings and so I know how those can be really intense and almost addicting. I should add that I'm a good looking athletic guy with a bit of a shaggy, rugged look so maybe they're expecting a different kind of relationship from me. So what do the ladies of Reddit think? Is this a maturity thing, an individual preference, or are some guys just too nice and supportive for the relationship to be interesting?
<bot>: Just had the most recent in a series of girlfriends who have broken up with me for being too nice and supportive in the relationship. Am I just picking the wrong girls or should I be doing something differently?