Sonic:

• Him flirting with you every now and then

• Getting jealous of Amy when you sometimes don't realize it

• Cuddling while he purrs

• Love kisses

• Him tickling you by surprise

Shadow:

• Hugging you by surprise

• He wants cuddles but too embarrassed to say so

• You scratching behind his ear which causes him to make a deep purring sound, leaning against your touch

• Him flirting with you a LOT

• Both of you staring at each other and majorly blushes