# Demas ... Crescens ... Titus

These are names of men. 

# He loves this present world

Possible meanings are 1) he loves the temporary comforts of this world or 2) he is afraid he will die if he remains with Paul. 

# Crescens went ... and Titus went

These two men had left Paul, but Paul is not saying that they also "love this present world" like Demas.

# Dalmatia

This is the name of a land region.