My BF is in India but will be going straight from there to Dallas next week. I haven’t seen him in a few months- partly because of his CRAZY schedule and because I have been working very hard finishing up my degree all summer. The times I've been free-he isn't and when he is- I've had to turn him down.
So, when he called and asked if I could meet him in Dallas, I was delighted that this time, I could actually manage it.

We will be there a few days. On one of those days, he is giving a lecture. Here’s my problem:

When he told me he was giving a lecture, I said, "Oh, really? That’s cool" and went on to the next subject.

Now, I'm thinking twice about my response. I'm wondering if I should have asked to go to his lecture.

The truth is, I don't want to go. He is very good and successful at what he does and I am very proud of him and support his every venture. But what he does is way over my head and a lecture on it would bore me to tears.
I would much rather spend the time touring Dallas and just meet up with him when it's over.

As a guy, would you expect your SO to ask to go? How would you feel about her if she didn't?

If it's the "expected thing" than I will ask to go (and hope he say's "no, honey, you go have fun").
But, on the other hand, would saying "Can I sit in?" be invading some kind of Man-space?
(Who knows how men think? If letting him pay for dinner makes you a "Gold Digger", maybe asking to attend your mans lecture makes you "clingy") ?
I usually entertain myself when we go places and he has board meetings but this is different.

Does not asking make me seem self-centered or like I'm not interested in his work?

OR
Maybe asking will be invading his professional space?
What’s the best thing to do?