Do we only say 'too' as a reply back to what someone has said to us?<br/><br/><u>Example:</u><br/><br/>Elena: Thank you for protecting me.<br/>Edward: Thank you, too, for taking care of me.<br/><br/>Or can we also say it as something in addition to what we've said earlier?<br/><br/><u>Example:</u><br/>Elena talking to Edward and Jacob.<br/><br/>Elena: Thank you, Edward.<br/>Elena: Thank you, too, Jacob.<br/><br/>Is the comma (,) required before the word 'too' like 'I love you, too'?