He was already planning to do that irrespective of how good the first date went.
He may be the kind of person that is constantly revising his online dating profile.
He does this whether he has a good or bad first date with someone.
He knows that there are certain facts about himself that he may be leaving out on his online dating profile.
Hence, as time goes on and he gets more used to being on the online dating site and meeting new people on dates, he revises his online dating profile in order to keep it as relevant and accurate to his personality as possible.
Again, he may be the kind of person who has been doing this with his online dating profile for a while.
He may return to revise his online dating profile on a semi-regular basis because he has thought of something new that he should add to it or he may realize that another detail that he included in it originally may now be obsolete.
Hence, he is quite consistent with revising his online dating profile so that he can be more satisfied with it.
Even if he may have had a good first date with you, he would still come back to revise his online dating profile because it is what he has always done with it.
He wants to perfect it as best he can and make it as relevant to his life as possible.
He may actually be looking forward to another date with you.
However, he is probably being realistic in the notion that the second date may not be as good as the first.
Hence, he doesn’t want to jump to any conclusions in expecting a second date to be just as good or better than the first.
He may have even experienced something like this in the past.
He may have had a good first date with someone and gotten really excited about the second date.
However, he may have gone on a second date with this person and things just weren’t the same.
The romantic chemistry was no longer there.
He may have even picked up on certain character flaws that made him feel uneasy about the person.
Hence, he may be trying his best not get carried away with how good the first date was.
As far as he is concerned, he will continue revising his online dating profile like he always has.
If he were to go on a second date with you and things go well, that would be great.
Perhaps there is something truly romantic that could come out of this.
But, he doesn’t want to make the mistake of getting his hopes up.
He knows that there are no guarantees when it comes to dating.
Hence, by revising his online dating profile, he is still keeping up with routine and giving himself a chance to attract more potential matches.
He may have also revised his online dating profile after a good first date because there is something new that he learned about himself during the course of the first date that he now wants to include on his online dating profile.
This may have been an epiphany that he felt was too poignant to leave out of his online dating profile. Hence, he feels the need to include that in his online dating profile because he wants to be as accurate to his character and life as possible.
Again, he has the mindset of keeping his dating options open.
That bit of new information in his online dating profile may make him that much more appealing to whoever visits his online dating profile.