Are ISFJ's known to want to take things slow and make more informed decisions by getting to know someone first (even if that takes a long time)? Or are they more likely being "nice," not wanting to hurt any feelings, and and making things friendly with the hope that I get the picture?
It's really tough reading her some times. She's not coming out and saying she's not interested. I sense that she is putting up some boundaries, but isn't coming right out and saying she isn't interested in me, even when I'm gushing all over her.
How would an ISFJ let someone who is very and explicitly interested in them know that she is unavailable? Do ISFJ's really need to know a person inside out before they seriously date them?
Is she giving you any reason to think she's not interested?
I've been an ISFJ forever to my knowledge, not like that the other cool cats out there who change their type as life goes on. And of course each person is different, but when I really like someone I let them know at least within a week if I think I have enough information on them not being a bad person, and if I think they might be interested. If I'm unsure if they're interested I become slightly withdrawn and nervous around that person, not entirely myself because I'm for some odd reason always thinking that'll scare them off -- that is if they don't give me a strong vibe back. I'll still persue them, but I won't be open and happy and vibrant about it because of fear of rejection. So maybe she needs some affirmation?

I really love bluntness. I like to know things as a concrete fact before any action is taken. If a guy will just tell me he is interested, that helps immensely. At that point I normally do one of two things:
Case 1-- I don't reciprocate feelings. If the guy makes me uncomfortable with his advances, I will normally avoid him, lose contact with him gradually. If he does anything even slightly negative or creepy, I will use that as my excuse to cut him off and not speak with him anymore. If he tries to make a move and I'm not into it, I'll tell him no and push him away if I have to. I will emphasize friendship as much as possible.
Case 2 -- I like him back, or will consider the person because they seem genuine. If I already know enough about him and like him completely, I will be all over him, talkative, flirty, open, and continuously reaffirm my intentions and feelings. If I'm not sure, I'll let the person know that as well, and then just play it by ear. If someone tells me they love me, and I don't love them back, I refuse to say it back. I've done that with people i've tried starting relationships with. Its good to be up front in that case.
And I'm not gonna lie, as long as I'm not in a relationship, every guy I meet (within reason) I will size up immediately and see if they are someone I would go for. I can tell with like 95% accuracy (eh... probably 100% accuracy, and then I just deny the idea that someone wouldn't want to date me because I want what I want! lol) a guys feelings towards me. She probably knows or gets a strong hint that u like her, but wants confirmation before she will embrace or condemn things. She will probably not want to hurt u up front if she will reject u, but she might. But hopefully all will go well and things will work out between u two.
