Grammaticaly the first is the only one to be correct. Verb then subject. When you write a dialogue you have to use this sentence. But when you talk you can use the second sentence and it is what French do most often.

Thank you all for your help :)

Hi there, i'd agree with Emly.

Usually in interogation forms you switch places and put the verb first "aimes tu ..?" In affirmative statements you write the subject first as in 'Tu aimes..."