Good day, r/Relationships

Me: 22m, her 19f. Currently in a temporary long distance relationship while we're studying abroad in the same country.

I've been to visit her twice, the first time for three weeks and the second for 5 days. For the first visit, after the first week and a half, things started going downhill (Small, insignificant things irked the daylights out of me). Tried again a month later, but the same thing happened after three or four days. 

When we're not physically together, everything is peachy. We text, email, and Skype daily, no real problems, and we're all lovey dovey. But when we're together for semi long periods of time, things tend to break down. 

Our current theory is that we're spending too much time in only each other's presence. Yes, we'd go out for walks or to eat and such, but we always did everything *together*. Once we're back in the States, we'll have plenty of opportunities to have breaks from each other (we attend the same university). 

I'm just wondering if you all think there are other possible reasons behind things breaking down when we're physically together but otherwise fairly great when we're apart. Advice would be wonderful.
user
LDR with girlfriend for 3-4 weeks in same country. Things tend to break down when we're physically together for extended periods of time. Wondering why. Advice would be
assistant
Good day, r/Relationships

Me: 22m, her 19f. Currently in a temporary long distance relationship while we're studying abroad in the same country.

I've been to visit her twice, the first time for three weeks and the second for 5 days. For the first visit, after the first week and a half, things started going downhill (Small, insignificant things irked the daylights out of me). Tried again a month later, but the same thing happened after three or four days. 

When we're not physically together, everything is peachy. We text, email, and Skype daily, no real problems, and we're all lovey dovey. But when we're together for semi long periods of time, things tend to break down. 

Our current theory is that we're spending too much time in only each other's presence. Yes, we'd go out for walks or to eat and such, but we always did everything *together*. Once we're back in the States, we'll have plenty of opportunities to have breaks from each other (we attend the same university). 

I'm just wondering if you all think there are other possible reasons behind things breaking down when we're physically together but otherwise fairly great when we're apart. Advice would be wonderful.
user
Tried to spend extended amounts of time with LDR SO but things seem to break down when we're physically together. Wondering if there's anything else behind it, if
assistant