Sai's Things

Um so my whole life I’ve always just known and assumed I was straight so I never questioned it but now during this quarantine it’s the first time I’ve ever questioned my sexuality and whether I’m bisexual...my biggest issues are that 1. I can’t tell if I can imagine myself in a long term relationship with a girl 2. I’ve never been intimate/in a relationship with neither a boy or girl and I have commitment issues and 3. Which is a question, Is it possible to have never been romantically attracted to the opposite gender until you were older? If any bisexual people can help me try and understand myself better please respond :(