First dates for some can be intimidating and stressful. Often, ones mind and emotions are overcome with insecurities and fears.
Conversation normally is a big factor for a positive date outcome as well as a great influence on the failure of your date.
Carrying a conversation during a first date can become difficult and uneasy at times, since you hardly know the individual you are dating (specially on a blind date), making it hard to open up and think of a certain topic to talk about and with slight tension and nervousness, things can be really awkward.
On dates, usually a person is scared of rejection and failure; thus is nervous and conscious on what to say. It has to be the right things; sparking his/her interests as the wrong words may either injure your dates feelings or make the conversation boring. This is because usually one is very concerned about ones impression that he/she is able to convey to his/her date.
Ones apprehensions can lead to damaging results, usually paralyzing ones thoughts and emotions, thus inhibiting ones capability to behave confidently and normally like one would do when he is in the company of family and friends.