Nah, love is an emotion that requires actual knowledge of the other individual.
You may feel "lust" at first sight, but if the beautiful guy/gal has an ugly personality, bad breath, no source of income, or some other fault that doesn't match your standards and aspirations it won't make it very far.
No. You can't tell if you love someone just by looking at them. That's judging a book by its cover. That's lust at first sight but not love. They could have a horrible personality.
That being said, if your first conversation with them is amazing, and you end up talking to them for like 4 hours without even realising the time going by, then you have a good first impression of them. You get butterflies in your stomach and you can tell that you have compatible personalities quite early on - whether it's friends or a relationship. If you hit it off, you hit it off.
So, it depends on if you mean "love at first sight" as in, you believe you love them from the first time you see them, or after the first conversation has been had. If it's just on looks, absolutely not. If it's based on the first conversation, still no, but you can sort of sense your potential to love them in the near future.
