Have you been thinking about this person at all? How is your marriage?
Thanks for explaining. I believe you had this dream because you were suppressing your thoughts of this person. You felt bad since you are married and love your husband. Since you say your sex life is not so good you may be yearning for affection. Sex is not just the physical aspect, but the emotional as well. This may leave a yearning to fulfill this void and therefore come out in your dream. Rather than suppress your feelings try to acknowledge them and understand what they are really telling you. That way you can work on them whether it be individually or within your marriage. Also, sometimes thoughts pop in our mind, but it does not mean we truly feel that way or want the things we think. It is our actions that are important. All in all I believe your surpressed thoughts and missing the affection came out in your dream. This does not necessarily mean you want this person, but maybe more so the thought of having that feeling positive again.
I believe the tea bad incident was one of those strange coincidences, but do not think there is a connection.
I wish you the very best and please let me know if I can be of further help.