4. Money problemThis can be an issue if your partner is a shopaholic. If you're in a relationship then you need to know how your partner is good with money handling. Savings are very important and you should do it every time as you will eventually start a family together so it will be your strength.5. Sex is important, but everythingCouples need sex. It is basically a need for a body. When you are living with your partner or even if you're in a relationship, eventually, you will get to know how serious and addicted your partner is about having sex with you.If your partner is sex-addict, then it is a problem. If your partner is losing interest in having sex with you, then it is also a problem, probably a "big one".Make sure to talk about everything the first chance you get. You can ask your partner, what is your expectation when it comes sexual/intimate relationship.More questions like, How many times do you want to have sex? Per week? Clarify, if both of you want to have sex on a daily basis. What if, if one of you is more interested in having sex in the morning, while the other one wants it at night?Like we say, sex is important but not everything. But if you love your partner enough then you can sure understand and act accordingly. Because someone has to make adjustments for the sake of your partner's happiness.