I am with a wonderful guy but lately I have been thinking of this woman at work. Does this mean I am a lesbian?

Thinking or fantasising about somebody does not necessarily mean that you are attracted to them. If you are attracted to a person of the same sex as you, it doesn’t mean you are gay, lesbian or bisexual.

It can be a confusing time trying to work out your sexual orientation. It is common for many people to question this at some stage in their life. You might want to seek support for yourself from someone you trust. You could ask a friend/partner, or you could seek support from a group or agency.