I recently went on a casual blind date with someone who is still in college. Our last email exchange was last Friday and he even complemented me in his email telling how cheerful I was and we were planning to meet again during Memorial Day weekend. I waited for 4 days to return his last email and then now it's been over 2 days since I sent him a reply... Well he is a first year PhD student at MIT and he is taking 4 classes and I think he may be doing research also. This week is final project due week and next week is final exam week. Shall I be more patient? If the guy is interested will he really find time to reply? Any opinions to share? Thanks.