Lust is short term
So you basically got to test the waters to see their true intentions, If they try pressure you into anything it's most likely lust. However if they respect your opinions and don't rush it it MAY be love. You can never tell if someone truly loves you until they put a ring on your finger that's all I know.
But you just need to have that feeling that its right and you can 100% trust them!
I messaged a few boys and asked them this as we don't know, so i wanted to give you advice from a boy and what to look out for!
If a boy really loves you he will do lots of things for you, want to see you all the time not force you into anything. Compliments you, asks you about your day and family! And BRAGS about you to his friends! if he does this he really does love you! Wants to get food with you. But most importantly cannot stop smiling with you!