<human>: Give me a shortened version of the text

My sister [14] is dating a boy [16] that used to live in our area, but he moved away and doesn't own a phone. he is currently emailing and video chatting with my sister to keep the relationship together, but he doesn't know is that I saw him the other day when I was shopping with my friend with another girl. holding hands and kissing. not no peck on the cheek or lips, it was a full French kiss. me and my friend were speechless. we took off and acted like we weren't there. i then saw him yesterday with the same girl grinding each other... i think this is inappropriate and my sister should leave him, but how will i be able to tell my sister, with out her disbelieving me? keep in mind she is only 14 yrs old and this boy is 16...
<bot>: my sister is dating her 16 yr old bf who says he moved out of the area but i saw him with another girl in our area.