Your date nights don't have to cost much or be fancy- You are both happy with a pizza and a movie on a Friday night- cheap and cheerful and some quality time spent together. Bliss.
You don't have to spend all hours of the day with each other- If you live together, you are quite happy to go off and do your own thing- if that's gaming, reading, watching a show, cooking, going on the laptop- whatever- you are content to disappear into different rooms and see each other in a few hours.
You don't feel the need to publicise your relationship- You don't post anything about each other on Facebook or Twitter- other people's opinions of your relationship don't matter- what you think of each other is all that counts and there are no problems there.
You don't make a fuss on anniversaries and Valentine's- You tell your partner you love them every day and they do the same back- you don't need to save it up for a couple of times a year dictated by the calendar.
You are both easily pleased- A long kiss when you get in from work, a great sex session or a loving text or email are all you need to make each other smile.
You don't criticise each other for their guilty pleasure- One of you is partial to one too many sweets, while the other has a mild gaming addiction- everyone has their vices and neither of you is any different.
You are both easy when it comes to plans- whoever suggests them- A take out- sure- a night with the family- ok- a trip to the cinema- you go and get your coat. You don't overthink things and just get on with it.
You don't deny each other time with other people- If your partner needs a night out with their mates, time with family or a work's night out- you don't begrudge them of that and you get the same relaxed attitude in return.
You don't worry about what they are getting up to- You trust that they will treat you with the same respect as you would them so you know that they won't cheat or speak about you in a negative way behind your back.
You never worry about your sex life- If you don't have a lot of sex one week because of work, tiredness or too many carbs- you know you will make up for it the next. You know you don't have to reach a quota like the media tells you to and accept that you will go through phases just like any other couple.