Every man wants to date and/or marry, but the painful truth is that you are best advised not to get involved with:
1. The angry woman
An angry woman is one who cannot control her temper or is always sullen. Beneath all that anger lies a serious issue. You don't want to know what it is. Uncontrolled anger often leads to confrontations and violence. Angry people should not be in relationships. Do not get with one. You cannot help her. Only a suitably qualified mental professional can, and only if she should accept his help.
2. The girl with disabilities
You will need to exercise caution and good sense here. No matter how pretty or hot she looks, even if you love each other, you still have to face reality. In some countries dating such a girl may have legal implications.There will always be the perception that you are taking advantage of her or that she's not responsible enough to decide for herself about romance or sex. Are you prepared to take the chance that that perception is correct? Think, too: if she's not a good person in the first place, she could easily use her disability to manipulate or exploit you. If she abuses you, who would you complain to? Who would take you seriously or even listen to you? Also, some disabilities require round-the-clock care by doctors; you can't provide that by dating the girl who has them.
3. The minor
If she's under the age of consent, don't even look at her twice. In my country that age of consent is 18. No girl under 18 is ever worth the trouble. Here they are often very demanding and disrespectful. She will not stand up for you if you face jail just for dating her. You cannot expect good sex or intimacy because as a child she is capable of giving neither. Ultimately it's a bad investment all round.
4. The broken/damaged woman
People go through trauma in life, that's a given. For some girls that comes in the form of abuse from a cruel ex or a deadbeat parent. For some more, drink and drug use are the culprits. If you're about to date or marry a girl and she shows signs that she is damaged in any of these ways, but has not taken the time to heal from it, don't do it. It is not your job to fix a broken individual; you are not a rehab centre or a domestic violence shelter. That job is best left to suitably qualified professionals.
Obviously girls can and should look out for the same things, and maybe others, before dating or marrying a guy; I chose to look at it from a man's point of view because I'm a guy and interested only in ladies! Like I said, use good sense when you date and real love before and when you marry, and you should be okay!