Heterosexuality is attracted to the opposite gender sexually while Heteroromantic is attracted to th opposite gender romantically. Either way, you're a straight person because you are attracted to the opposite gender and still receive straight and cis privilege and are not oppressed. Simply put, If you are not transgender and/or do not feel sexually and/or romantic attraction towards the same gender, then you are not apart of the LGBT+ community. LGBT+ is same-gender attraction and transgender exclusive. You may not be sexually attracted to the same gender but you are romantically and then you are also cis gender.