^ Oh yes, definitely it's very good to stay in together! It's a lot of fun... ;-)
And of course, spending time just the 2 of you is really important to have a successful relationship! :haihai:
Of course, it's good to have fun going out as well, but I think the most important thing is to both like the same balance - I mean, if one of you gets bored quicker than the other of staying in, well, that's no good. >.< I don't mean to say a couple would get bored of
each other (well it can happen, but I'm thinking about an otherwise good relationship here

), but simply that sometimes people have different likes and dislikes in how to amuse themselves, so if that's very divergent between two people, it can cause problems in a relationship unless they are fully accommodating.
Personally, I'm quite adaptable, and lucky enough to have enjoyed good relationships with 'stay-at-home' type guys and 'party animals'
I love cosy things about staying in... curling up on the sofa... making food or eating comfort junk food or takeaways

... lying in bed on a sunny weekend morning knowing you don't have to get up yet

... playing card and board games (and scalextric: w00t!! XD)... having play fights :box:

... practicing knotwork... relaxing massages... laughing at the stupidest things off unfunny tv programmes... talking about serious and non-serious stuff...
And I love going out as well... the cosy 'local' with its roaring fire and handful of people that know you and are always friendly ... cheesy '80s clubs

... fetish clubs with dungeons... informal gatherings... wandering down the park and holding conversations with those peculiar waterbirds

... checking out the canals on a Saturday... biking out into the country... exploring... the London Alternative Market... house parties...
Yeah, life is good.*
---
[*I don't really know why I'm saying that as though I have a partner when I'm actually single, but who cares, I'm still in a happy mood for appreciating the good things in life!

]