Long distance boyfriend, should i trust him?

[millie]

I'm 15 and i live in England, but for the past 14 months I've been dating a 19 year old Australian guy. We haven't met yet (i wish we had..), we text all day every day, i have at least 50 pictures of him and 2 videos (not directly to me, just ones his friend took of him doing weird things hahaha), but i'm wary that people might not be who they seem on the internet.

He doesn't have facebook or twitter, but we have each others skype, but whenever i ask to call him he gets all defensive and says he has to go or that it breaks his phone.. Could he just be nervous, or might he be lying? idk.

Also, since hes a 19 year old guy he finds it difficult that we cant do 'things' and im always worried he might cheat on me because he's so far away and i'd never know. He gets mad when i ask, so how can i learn to trust him more? i really do love him and i just want to make sure everything is ok really.
Thought i'd reply to ruthie here, seeing as it's definitely not top answer.

1. Your 15. He's 19
Yes, and whats the problem with our ages?

2. The videos and pictures he is sending you might not even be him.
That is why i asked the question.

3. YOU CAN'T TRUST STRANGERS ONLINE!
Not all of them, no. But some are who they say they are.

4. He probably wants to marry/date an Australian girl.
People like different nationalities, like for me australian guy's accents pretty much give me a heart attack, and he loves british girls.

5. who said he was your boyfriend?
he did, duh. He asked me to be his girlfriend.

No offense, but you are like the biggest moron ever for trusting a guy 5 years older than you that u have never met before but you still gave him your number. Ya, totally makes sense for a 15 year old dumb ***.

I am not a moron, im a lovestruck teenager and surely most people can relate to that. We used kik but it kept crashing, so we exchanged numbers instead.