It's hard to tell by mere looking at a person what lies in the core of their hearts. We must learn to take risks in our lives.
I'm not saying you should accept anyone who comes to you. Access them by your own standard of what you believe is good or right or acceptable. Get to meet them, know them, know what you can tolerate in their characters and behaviours and what you can't tolerate.
When you meet a person whom you love and who claims to also love you, pray sincerely that God should take care of it. If he is not the right one, something will come up and the relationship will not workout even before it starts. Don't fight it, accept it and pray to God to show you the right one. With patience and faith, you will end up with the right one.
A lot of time people will make you feel like you're being abnormal, especially when you remain single for a long time, such opinions don't shake people who know what they want and why they are taking their time to do it.
I may go on and on, but the best thing to do is commit it to PRAYERS and listen to what your HEART says about it. True Love Exists. Vampire