I have been in a relationship for 4 years now. You can probably imagine some of the things we've been through and the rollercoaster it has been.
A video that came out a few years ago talks about the different stages of relationships and it's called "Strangers, Again." One of the stages of any relationship is being comfortable, and while that in itself isn't a bad thing, what you do with being comfortable is what can be detrimental to your relationship.
In my own opinion and interpretation, here are two ways you an be comfortable:
1. Comfortability turns into apathy. So many times, couples who are comfortable like this eventually grow apart because they are so used to the routine of the relationship and they eventually stop caring.
A way to combat this? I'll explain that with the other side of comfort:
2. Comfortability turns into exploration. If you are this way with your significant other, it means that sure, you guys are comfortable just like the other couple, but instead of growing apart you use it to try and figure out new ways to explore yourselves as individuals and as a couple. Because at this point you two already know each other so well, you can use it to push yourselves and each other and see what you two can conquer together, whether it's something adventurous like skydiving or something as learning to be okay sitting in silence together. (Note: sitting in silence together is different than being silent because there is nothing to talk about.)
Darell and I have definitely been both of these types of comfortable, and now that we're getting older and more mature, we're learning and trying ways to be comfortable and explore our interests together and as individuals rather than growing to slowly not caring about the relationship at all. It is definitely easier to start growing apathetic than to start exploring and maintaining the relationship, but it is all on you and how much effort you both put in to get things going.
So, what are your best tips for when you are in the stage of being "comfortable" with your significant other? Has this stage ever been what led to the downfall of a past relationship? I'd love to hear your stories!