I have some photos I want to share and they're on Google Photos. I want to only share them with 1 other person who has a Gmail account. I can find share on Google+ and the option is public but this isn't what I want.
What I am understanding, you want to share some photos from Google photos with someone who doesn't have G+ account but does have Gmail (correct me if I am wrong).
In this case follow these steps (From Google Photos Help):
- Go to photos.google.com.
- Place your cursor over a photo or video you want to share. Click the checkmark.
- Select any other photos you want to share.
- At the top right, click the share icon.
- choose Get shareable link to send someone a link.
For more information see this Share a photo album.