Thanks for your question. Is this person from someone known from your group of friends or is it someone random you came across through the media?
There are some people who accept friend request easily while others not. Therefore, he may have accepted you since you have mutual Facebook friends in common, but may be hesitant to respond to you especially if you are younger. He may also be in relationship and that could be the reason. All in all I would not take this personal. Could be your messages are also going into his "other" folder and I noticed a lot of people do not even see those messages especially if using a cell phone. It is not dumb of you for wanting to get to know him better. You are interested since you saw you both have things in common. It's just that some people may be taken back by another messaging them and a little afraid whereas others would not mind and are more open. This is just his personality type, so I would not take offense to this or think it has anything to do with you.
I believe that can still happen even when friends. I think it is an ok sign that he accepted you. But yes like you said you don't want to come across too strong if you start commenting too much . I would try to do a good balance. Since you texted him before and his number is ***** you can also try texting him something like " I don't mean to bother you, but you just caught my attention in Facebook because I agree with a lot that you post and I think we have a lot in common. I never did this before just so you know I am not a Facebook stalker lol. I am interested in chatting with you to get to know you better if you like. I noticed we have lots of the same friends". I would try something along those lines then see where that leads then go from there.
There is effort that goes into a relationship. However, this is a little different sinice it is through facebook. People are usually more afraid and skeptical then if you both met in a different setting. He also may be involved with someone and this can be the case as well.
I understand. It's just that people are more wary on facebook. I think you should just stay at the pace you are and give him some time. If you wanted to be direct and take a huge risk you can ask him out for coffee or lunch. Other than that a good balance of what you are doing is all you can really do. In order to do anymore he would need to reciprocate.
It is reasonable to think you will meet someone interesting. It does make it more difficult if you are not around others more. But when going out always remember where you meet someone can tell a lot about them. For example if you rather not have someone that drinks and goes to bars then would not be wise to meet someone at a bar. Now if meeting them at a supermarket that may be a better option. This is something to consider when meeting someone as well.
That's a good way to start a conversation.
I would say something along the lines of
Hey we are friends on Facebook and I hope all is well with you (this is if you are emailing him) otherwise you would start off as
Hey hope all is well with you. I noticed you are into creative business as I am. I think it would be great to meet someone with the same interests and was thought maybe you would like to see some samples of my work, so I am attaching them. Let me know if you would like to chat sometime.